381722 has 8 divisors (see below), whose sum is σ = 624672. Its totient is φ = 173500.

The previous prime is 381713. The next prime is 381737. The reversal of 381722 is 227183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8654 + ... + 8697.

It is an arithmetic number, because the mean of its divisors is an integer number (78084).

2³⁸¹⁷²² is an apocalyptic number.

381722 is a deficient number, since it is larger than the sum of its proper divisors (242950).

381722 is a wasteful number, since it uses less digits than its factorization.

381722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364.

The product of its digits is 672, while the sum is 23.

The square root of 381722 is about 617.8365479639. The cubic root of 381722 is about 72.5408093670.

The spelling of 381722 in words is "three hundred eighty-one thousand, seven hundred twenty-two".